Radiohelical cam-gearing.



.PATENTED MAR. 22, 1904. H. J. SGHMIOK. RADIOHELIGAL CAM GBARING.

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APPLICATION I'ILED'JULY 18, 1903.

N0 MODEL.

PATENTED MAR". 22, 1904 H. J'. SGHMIGK.

RADIQHELIGAL'OAM GEARING.

APPLIOATIQN IILED JULY 16, 1905.

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I0 MODEL.

Wilma/00% PATENTBD MAR. 22, 1904.

H. J. SGHM'IGK. RADIOHELIGAL GAM'GEARING.

APPLICATION FILED Q'ULY 16, 1903.

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attozw UNITED STATES Patented March 22, 1904.

PATENT OFFICE.

RADIOHELICAL CYAM-GEARING.

SPECIFICATION forming part of Letters Patent No. 755,051, dated March22, 1904.

Application filed July 16, 1903. Serial No. 165,733. (No model.)

To all whom it may concern:

Be it known that I, HENRY J. SoHMIoK, a citizen ofthe United States,residing at Hanuburg, in the county of Berks and State-of Pennsylvania,have invented certain new and useful Improvements in RadiohelicalCam-Gearing; and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

My invention relates to means for transmitting power and convertingmotion, has for its object the transmission of the maximumpower from ashaft revolved in a given direction to a shaft revolved in a directionat a right angle to the former or power-driven shaft without sacrificingor reducing the speed of the driven shaft, and the invention consists incertain improvements in construction in the radiohelical cam for whichLetters Patent of the United. States were granted to me on the 20th dayof May, 1901, and numbered 675,020, which improvements will be fullydescribed in the following specification and claims.

For the purpose of distinguishing the construction of my gearing it hasbeen designated or wheeldriven by the head and its working members, andtheir engaging surfaces are of varying angularity to produce continuousleverage on the peripheral members of the disk or wheel driven thereby.

In the accompanying drawings, which form part of this specification,Figure 1 represents an elevation taken on line 1 1, Fig. 2, looking inthe direction of the arrow and showing the relation and position of theradiohelical mem bers in connection with the toothed wheel; Fig. 2,avertical longitudinal section showing the toothed wheel in sideelevation; Fig. 3, a detail section on line 3 3, Fig. 1, part of the camhead or disk being broken away and showing the angular engaging surfaceof the one cam or working member in contact with one of the teeth orperipheral members of the gearwheel. Figs. 1, 5, 6, 7 and 8 are likeviews, Y 5

respectively, on like lines on Fig. 1, and Fig.

9 a side elevation of the head separated from the revoluble member orgear-wheel, and are on a reduced scale compared with Figs. 1 and 2. Fig.10 represents an elevation taken on line 10 10, Fig. 11; and Fig. 11, avertical longitudinal section showing a modification of the peripheralmembers on the gear-wheel.

Reference being had to the drawings and the designating charactersthereon, the nu- 6O vmeral 1 indicates a shaft to be driven by anysuitable or preferred motor or from any source of power; 2, a headsecured to the shaft to revolve therewith and on one side or face ofwhich are a series of radiohelical members 3 5 4 5, arranged in the samevertical plane, and are of the same pitch or curve on their outer orworking surfaces, each working surface being a segment of a circlestruck or described from a different radial point6 7 8 equidistant 7from the center of the head 2, each member being approximately as thickas the teeth and the space between the teeth or peripheral members onthe gear-wheel, and is so arranged with reference to the adjacentmembers that they overlap each other by the inner ends 9, 10, and 11,extending beyond the outer ends of the next member in succession,leaving spaces between them for the passage of a tooth or peripheralmember of the gear-wheel, as 30 shown in Figs. 1, 2, 10, and 11.

12 indicates a gear wheel or disk having teeth or peripheral members13', and is supported on a power-transmitting shaft 14: at a right angleto the shaft Land the wheel 12 is 5 directly opposite the transversecenter of the head 2, and to effect constant engagement of the workingsurface of the radiohelical members with the teeth 13 of the wheel 12the outer or engaging surface 15 is made angular in transverse sectionof the members and of a constantly-increasing pitch from the root orpoint of engagement 16 with a tooth, and the inside surface 15 of saidmember is inclined in the same ratio, but in the reverse direction, toprevent binding of the next tooth thereon as theliead revolves. Theinside of each member 3 4 5 is cut away at 17 18 19 to afford readypassage over and release from the outer surface of the teeth 13, theteeth being concavo-convex in cross-section and the curves of the teethcorresponding with the curved lines of the members 3, 4, and 5. In therevolution of the head 2 the inner end of one of the radiohelicalmembers engages one side of a tooth on the wheel 12 just as the outerend of an adjacent member is passing out of engagement with an adjacenttooth, so that the leverage of the said members operating consecutivelywith the teeth 13 of the wheel 12 is continuous, as in the use of ascrew, in which the inclines of the threads of the screw arecontinuously pushing against the threads of the nut. As soon as one ofthe members has reached a. point in the revolution of the head that itcan no longer effectively act upon a tooth of the wheel 12 the nextmember on the head in succession instantly engages the next tooth on thewheel and continues the revolution of the wheel, the constant leverageof the members being effected by the constantly-varying angle of theworking surfaces on the outside of said members.

The helical members on the head 2 may be varied in number and in pitch,according to the speed and power required, a reduction in the pitch ofthe members producing a corresponding reduction in the speed of thewheel 12 and an increase in the pitch producing the opposite effect.This variation in the number and the pitch of the members necessitates acorresponding variation in the number and pitch of the teeth on thewheel 12.

It will be observed that the continuously-increasing leverage of themembers 3 4c 5 from the time they engage the teeth 13 consecutivelyproduces a constant increase of power exerted upon the wheel 12 and itsshaft without sacrificing the speed of said members in their revolution,for the reason that the speed of the members on their outer or workingsurfaces increases from the center of the head 2 to the highest point ofthe membersthe periphery of the head-in its rotation.

It is obvious that the head may be revolved in either direction towardthe right or the left, as occasion may require, and it may be reversedwhen desired when the members engaging the teeth on the wheel 12 serveas a brake to retard or stop the machine, car, or vehicle to which thegearing is applied.

In Figs. 10 and 11 I have shown a modification of the peripheral memberson the driven wheel. In this instance a disk 20 is provided with radialstuds 21 on its periphery, on which are mounted revoluble sleeves 22 toreduce the friction between the members 3 4 5 and the peripheral membersto the minimum. These studsare inserted in holes in the periphery of thedisk and secured by transverse pins 23.

Having thus fully described my invention, what I claim is 1. Adriving-shaft, a member supported thereon and provided with a pluralityof separate radiohelical working members having transverse angularengaging surfaces on their outer sides; in combination with a revolublemember provided with peripheral radial members engaged successively bythe angular surfaces of said working members, and a powertransmittingshaft.

2. A driving-shaft, a member supported thereon and provided with aplurality of separate radiohelical working members having transverseangular engaging surfaces on both sides thereof; in combination with arevoluble member provided with peripheral radial members engagedsuccessively by the angular surfaces of said working members, and apowertransmitting shaft.

3. A driving-shaft, a member supported thereon and provided with aplurality of separate radiohelical working members having engagingsurfaces of Varying angularity on their outer sides; in combination witha revoluble member provided with peripheral radial members engagedsuccessively by the angular surfaces of said working members, and apower-transmitting shaft.

4:. A driving-shaft, a, member supported thereon and provided with aplurality of radiohelical working members having engaging surfaces ofvarying angularity on both sides thereof; in combination with arevolublemember provided with peripheral radial members engagedsuccessively by the angular surfaces of said working members, and apower-transmitting shaft.

5. A driving-shaft, a member supported thereon and provided with aplurality of radiohelical working members having oppositely-inclinedtransverse angular engaging surfaces on opposite sides thereof; incombination with a revoluble member provided with peripheral radialmembers engaged successively by the angular surfaces of said workingmembers, and a power-transmitting shaft.

6. A driving-shaft, a member supported thereon and provided with aplurality of radiohelical working members overlapping each other attheir adjacent ends and whose adjacent overlapping sides are verticaland then incline in opposite directions, throughout the length of themembers; in combination with a revoluble member provided with peripheralradial members engaged successively by said working members, and apower-transmitting shaft.

7. A revoluble member provided with pe- In testimony whereof I afiix mysignature in presence of two witnesses.

HENRY J SCHMICK.

Witnesses:

D. C. REINoHL, W. PARKER REINoHL.

